Regulations last checked for updates: Oct 02, 2026

Title 40 - Protection of Environment last revised: Sep 29, 2026
§ 180.435 - Deltamethrin; tolerances for residues.

(a) General. (1) Tolerances are established for residues of deltamethrin, including its metabolites and degradates, in or on the commodities listed in the following table. Compliance with the tolerance levels specified is to be determined by measuring only deltamethrin, (1R,3R)-3-(2,2-dibromovinyl)-2,2-dimethylcyclopropanecarboxylic acid (S)-alpha-cyano-3-phenoxybenzyl ester, and its major metabolites, trans-deltamethrin, (S)-alpha-cyano-m-phenoxybenzyl(1R,3S)-3-(2,2-dibromovinyl)-2,2-dimethylcyclopropanecarboxylate, and alpha-R-deltamethrin, (R)-alpha-cyano-m-phenoxybenzyl-(1R,3R)-3-(2,2-dibromovinyl)-2,2-dimethylcyclopropanecarboxylate, in or on the commodity.

Table 1 to Paragraph (a)(1)

Commodity Parts per million
Almond, hulls2.5
Apple, wet pomace1
Artichoke, globe0.5
Barley, bran5
Cattle, fat0.05
Cattle, meat0.02
Cattle, meat byproducts0.05
Citrus, dried pulp 13
Citrus, oil 150
Corn, field, forage0.7
Corn, field, refined oil2.5
Corn, field, stover5
Corn, pop, stover5
Corn, sweet, forage10
Corn, sweet, kernel plus cob with husks removed0.03
Corn, sweet, stover15
Cotton, refined oil0.2
Cotton, undelinted seed0.04
Egg0.02
Fish—freshwater finfish0.01
Fish—freshwater finfish, farm raised0.01
Fish—freshwater finfish, other0.01
Fish—freshwater finfish, tuna0.01
Fruit, pome, group 110.2
Goat, fat0.05
Goat, meat0.02
Goat, meat byproducts0.05
Grain, aspirated fractions65
Grain, cereal, group 15, except sweet corn2
Hog, fat0.05
Horse, fat0.05
Horse, meat0.02
Horse, meat byproducts0.05
Lychee 10.2
Milk, fat (reflecting 0.02 ppm in whole milk)0.1
Nut, tree, group 140.1
Onion, bulb0.1
Onion, green1.5
Orange 10.3
Poultry, fat0.05
Poultry, meat0.02
Poultry, meat byproducts0.02
Radish, tops4
Rapeseed0.2
Rice, hulls2.5
Rye, bran5
Sheep, fat0.05
Sheep, meat0.02
Sheep, meat byproducts0.05
Sorghum, grain, forage0.5
Sorghum, grain, stover1
Soybean, seed0.1
Soybean, hulls0.2
Starfruit 10.2
Sunflower, seed0.1
Tomato0.3
Tomato, paste1
Tomato, puree1
Vegetable, cucurbit, group 90.2
Vegetable, fruiting, group 80.3
Vegetable, legume, pulse, bean, dried shelled, except soybean, subgroup 6-22E 10.07
Vegetable, legume, pulse, pea, dried shelled, subgroup 6-22F 10.07
Vegetable, root, except sugar beet, subgroup 1B0.2
Vegetable, tuberous and corm, subgroup 1C0.04
Wheat, bran5

1 There are no U.S. registrations.

(2) A tolerance of 0.05 ppm is established for residues of the insecticide deltamethrin, including its metabolites and degradates, in or on all food/feed items (other than those covered by a higher tolerance as a result of use on growing crops) when deltamethrin is used in food/feed handling establishments or as a wide-area mosquito adulticide. Compliance with the tolerance levels specified is to be determined by measuring only deltamethrin, (1R,3R)-3-(2,2-dibromovinyl)-2,2-dimethylcyclopropanecarboxylic acid (S)-alpha-cyano-3-phenoxybenzyl ester, and its major metabolites, trans-deltamethrin, (S)-alpha-cyano-m-phenoxybenzyl(1R,3S)-3-(2,2-dibromovinyl)-2,2-dimethylcyclopropanecarboxylate, and alpha-R-deltamethrin, (R)-alpha-cyano-m-phenoxybenzyl-(1R,3R)-3-(2,2-dibromovinyl)-2,2-dimethylcyclopropanecarboxylate, in or on the commodity.

(b) Section 18 emergency exemptions. [Reserved]

(c) Tolerances with regional registrations. [Reserved]

(d) Indirect or inadvertent residues. [Reserved]

[62 FR 63001, Nov. 26, 1997, as amended at 63 FR 45414, Aug. 26, 1998; 69 FR 62614, Oct. 27, 2004; 74 FR 46375, Sept. 9, 2009; 76 FR34885, June 15, 2011; 79 FR 66301, Nov. 7, 2014; 80 FR 16302, Mar. 27, 2015; 82 FR 18580, Apr. 20, 2017; 88 FR 19879, Apr. 4, 2023; 91 FR 8108, Feb. 20, 2026]
authority: 21 U.S.C. 321(q), 346a and 371
source: 36 FR 22540, Nov. 25, 1971, unless otherwise noted.
cite as: 40 CFR 180.435